Elastic stability and HEP detectors: a primer
/ Wertelaers, P (CERN EP-DT)
Destabilizing -- or "buckling" -- phenomena can compromise the quality of a physics detector long before the point of collapse has been reached. We rehearse on the two types of buckling : snap-through versus bifurcation. [...] EP-Tech-Note-2018-005.-
Geneva : CERN, 2018 - 1 p. Fulltext:PDF;

Downward transfer of a sub-cooled cryoliquid
/ Wertelaers, P (CERN EP-DT)
An alternative is proposed to the traditional transfer of a cryo fluid in gaseous -- and warm -- form, a method of low productivity and high energy cost. In order to prevent the much-feared geysering, focus is on sub-cooling of the liquid, and the safe maintaining of such state all along the journey [...] EP-Tech-Note-2018-004.-
Geneva : CERN, 2016 - 19 p. Fulltext:PDF;

Simple-topology switched-mode DC-DC converters : dynamics and control
/ Wertelaers, P (CERN EP-DT)
After a rehearsal of the functioning mode and characteristics of the buck-boost and buck converters, we attempt to formalize a lower-frequency description of the converter, by smoothing the waveforms containing switching ripple. This framework enables the construction of a linear time-invariant computational model, to which voltage-regulating actions can then be added. [...] EP-Tech-Note-2018-001.-
Geneva : CERN, 2018 - 26 p. Fulltext:PDF;

Studies of IBL wire bonds operation in a ATLAS-like magnetic field.
/ Alvarez Feito, D (CERN PH-DT) ; Honma, A (CERN PH-DT) ; Mandelli, B (CERN PH-DT and University of Oslo)
At the Large Hadron Collider (LHC) experiments, most of silicon detectors use wire bonds to connect front-end chips and sensors to circuit boards for the data and service trans- missions. These wire bonds are operated in strong magnetic field environments and if time varying currents pass through them with frequencies close to their mechanical resonance frequency, strong resonant oscillations may occur. [...] PH-EP-Tech-Note-2015-002.-
Geneva : CERN, 2015 - 12 p. Fulltext:PDF;

IBL Thermal Mockup Bake-Out Tests
/ Nuiry, FX (CERN PH-DT) ; Feigl, S (CERN, PH-DT)
This note summarizes different bake-out tests that have been performed with the ATLAS Insertable B-Layer (IBL) mockup. Two beam pipe configurations have been tested: one with the aerogel insulation layer all along the pipe and one without insulation over 622 mm around Z0. [...] PH-EP-Tech-Note-2014-001.-
Geneva : CERN, 2014 - 27 p. Fulltext:PDF;